partition_scheme_name ( column_name ) specifies the partition scheme for the table. The partition scheme must already exist in the database. To create the partition scheme, see CREATE PARTITION SCHEME (Transact-SQL).column_name specifies the column against which a partitioned index is partition...
在SQL Server 2008 R2 中创建新表。 Transact-SQL 语法约定语法 复制 CREATE TABLE [ database_name . [ schema_name ] . | schema_name . ] table_name ( { <column_definition> | <computed_column_definition> | <column_set_definition> | [ ] [ ,...n ] } ) [ ON { partition_scheme_...
time dateDEFAULTGETDATE()--插入系统值); 3)自增--IDENTITY IDENTITY的开始值是1,每条新记录递增1。 createtablestudent( idintPRIMARYKEYIDENTITY, namevarchar(255) ) 3、create index create[UNIQUE]INDEXstudent_indexonstudent(id[DESC], name); 4、select into 创建表 select*intostudent4fromstudent; 二...
在用户定义表类型中,column_name<data type> 中使用的结构化用户定义类型是定义表类型的数据库架构作用域的一部分。 若要访问数据库不同作用域中的结构化用户定义类型,请使用由两部分组成的名称。在用户定义的表类型中,计算列的主键必须是 PERSISTED 和NOT NULL。在Fabric SQL 数据库中,可以创建用户定义的类型,但...
SQL CREATETABLEt1 ( c1varchar(20)COLLATEDivehi_90_CI_AS_KS_WS)WITH(PARTITION(c1RANGEFORVALUES(N''))) 如果boundary_value 是必须隐式转换为 partition_column_name 中数据类型的文本值,会出现差异。 通过 Azure Synapse Analytics 系统视图显示文本值,但转换后的值用于 Transact-SQL 操作。
IDENTITY 表示新列是标识列。当向表中添加新行时,Microsoft® SQL Server™ 将为该标识列提供一个唯一的、递增的值。标识列通常与 PRIMARY KEY 约束一起用作表的唯一行标识符。可以将 IDENTITY 属性指派给tinyint、smallint、int、bigint、decimal(p,0)或numeric(p,0) ...
<column_definition> ::=column_name <data_type> [ COLLATE collation_name ] [ NULL | NOT NULL ] [ DEFAULT constant_expression ] | [ IDENTITY [ ( seed ,increment ) ] ] [ ROWGUIDCOL ] [ <column_constraint> [ ...n ] ] <data type> ::= ...
] <column_definition> ::= column_name <data_type> [ COLLATE collation_name ] [ GENERATED ALWAYS AS ROW { START | END } [ HIDDEN ] ] [ NULL | NOT NULL ] [ [ CONSTRAINT constraint_name ] DEFAULT memory_optimized_constant_expression ] | [ IDENTITY [ ( 1, 1 ) ] ] [ <column_con...
The only supported alternative collating sequence is IDENTITY_16BIT. The column cannot be a graphic data type. Anchored data types cannot anchor to a column that is created with CCSID UNICODE (SQLSTATE 428HS). Tables cannot have both the CCSID UNICODE clause and the DATA CAPTURE CHANGES clause...